Step 1
Extract the RSA private key from the image
Try this step on your own first. Reveal more only when you're stuck.
Guided walkthrough
StegoRSA
Solve it yourself, one step at a time. Each step starts with a nudge. Reveal a hint, the full step, or the deeper explanation only when you actually need it.
Step 1 of 3
Want the whole solution at once? View the full writeup.